NYC-WTC_000228893

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume Biters); 1808 Lab Group 7733 Filter Type / Filter Area: MCE 3S5 mm^ Lab Sample #: 4 Grid Opening Size: 0.01124 Client Sample #: 06 Area Examined: 0 04496 mm^

GRID BOX: Magnification: 20 000 GRIP ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 5/13/02

Analysis Performed By: ROMAN PEYSAKHOV

GO, Structure Structure Type Length 10 of Structure N or v EDS No >=0511" (Nwiadb F- B C M >=5p Chrys Afnphibole Nonasi Airt3ig/N0 No Coord <Sm' Etements)

U-

Struct = >0.5n >5:1 Aspect Ratio Grid acceptance: •J = Positive diffraction patten properties conforming to <50% undisaolvad filter, overlapped or folded Totals laboratory identiBcation criteria observed <10% paitoitate coverage ’50% coverage ate lean 20 unfolded orovertapped grid squares <5% F B C M >5p •/- EDS spectrum conforming to iaboraloty holes or opaque areas identificadort criteria observed Chrysotile AMPHIBOLES Amphibole Single Fiber. Amosite 8 = Bundle (<3 fibers <1 liberdiameter apart Crocidolite Ambiguous C = Cluster (>3 Irrteraections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified USD = Mo Structures Detected

CITY_21MC100_002901853

NYC-WTC_000228893